Lesson plan

Solve a system of equations in slope-intercept form by using substitution

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teaches Common Core State Standards 8.EE.C.8.b http://corestandards.org/Math/Content/8/EE/C/8/b
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Big Ideas: Exact solutions of linear systems can be found algebraically through substitution. A system of linear equations in slope intercept form can be solved by using the substitution property of equality. Students will algebraically solve linear systems that have their equations in slope-intercept form by using substitution. In this task, they will use the information about one variable to solve for another and, thus, solve the linear system. Vocabulary: substitution, slope-intercept form